MAXIMUM DOSAGE OF GLASS CULLET AS FINE AGGREGATE IN MORTAR

Author(s):  
K Yamada ◽  
S Ishiyama
Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3189 ◽  
Author(s):  
Marcin Małek ◽  
Waldemar Łasica ◽  
Mateusz Jackowski ◽  
Marta Kadela

A responsible approach towards sustainable development requires the use of environmentally friendly, low-carbon, and energy-intensive materials. One positive way is to use glass waste as a replacement for fine natural aggregate. For this purpose, the effects of adding glass cullet to the mechanical properties of mortar were carried out. The glass aggregate made from recycled post-consumer waste glass (food, medicine, and cosmetics packaging, including mostly bottles), were used. This experimental work included four different contents of fine glass cullet (5, 10, 15, and 20 wt.% of fine aggregate). The compressive, flexural, and split tensile strengths were evaluated. Moreover, the modulus of elasticity and Poisson coefficient were determined. The addition of glass sand aggregate increases the mechanical properties of mortar. When comparing the strength, the obtained improvement in split tensile strength was the least affected. The obtained effect for the increased analysed properties of the glass sand aggregate content has been rarely reported. Moreover, it was determined that by increasing the recycled glass sand aggregate content, the density of mortar decreased. In addition, the relationships between the properties for mortar containing glass sand aggregate were observed.


Author(s):  
Rizwan Ahmad Khan ◽  

This paper investigates the fresh and durability properties of the high-performance concrete by replacing cement with 15% Silica fume and simultaneously replacing fine aggregates with 25%, 50%, 75% and 100% copper slag at w/b ratio of 0.23. Five mixes were analysed and compared with the standard concrete mix. Fresh properties show an increase in the slump with the increase in the quantity of copper slag to the mix. Sorptivity, chloride penetration, UPV and carbonation results were very encouraging at 50% copper slag replacement levels. Microstructure analysis of these mixes shows the emergence of C-S-H gel for nearly all mixes indicating densification of the interfacial transition zone of the concrete.


2019 ◽  
Vol 770 (5) ◽  
pp. 51-56
Author(s):  
Yu.G. BORISENKO ◽  
◽  
R.M. AZAN ◽  
D.P. SHVACHEV ◽  
D.A. VOROBIEV ◽  
...  

1994 ◽  
Vol 61 (1_suppl) ◽  
pp. 198-200
Author(s):  
A. Raimoldi ◽  
G.L. Berti ◽  
V. Giola ◽  
G.L. Leidi ◽  
A. Maccaroni ◽  
...  

The authors assessed the effectiveness of an association of prostaglandins (PgE1) and Ketanserine (K) in pharmacoprosthesis on 24 patients with erectile deficiency of various etiology. The association of 20 mcgr of PgE1 with K (from 2 to 6 mg) was more effective in inducing erection than only PgE1 at 40 mcgr dosage; in 3 patients the effectiveness was relatively equivalent. No relevant side effect was found except for a transitory hypotensive episode in a patient when the K maximum dosage was reached, which was resolved without the help of pharmacological therapy. Consequently, K can certainly be considered capable of strengthening the action of the PgE1 in inducing erection and, therefore, can be usefully associated with the latter whenever either a satisfactory erection hasn't taken place or the PgE1 dosage is to be reduced in order to lower costs.


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